Cushion-spring.



C. W. SCHULTZ, DI-CD.v

R. E. SCHULTZ. ADMINISTRATOR.

CUSHION SPRING.

Patented Mar. I4, 1916.

APPLICATiON FILED FEB. 26 I9I2.

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C. W'. SCHULT?, DECD.

II. E. scIIuLTz. ADMINISTRATOR. CUSHION SPRING. APPLICATION FILED FEB.26, I9I2.

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Application mea Februar-jr 2e, 1912,. ser-m1 no. 679,825.

To all 'whom it may concern:

Be. it known that l, CHARLES W. SGHULTZ, a citizen of the United States,and a resident l of Detroit, in the county of Wayne and State spiralsprings.

of Michigan, have invented a new and useful Cushion-Spring, ofwhich thefollowing"Y is a specification.

This invention relates to cushion-springs for seats and seat-backs forvehicles, and particularly for automobiles; andits object is to-providea construction of which predetermined parts shall be very yieldable and'very resilient.

l Thls mventlon conslsts of a frame, a serles of helical-springs mountedthereon inf parallel, longitudinal and transverse rows, 1n combinationwith flat, spiral springs extending `from the outer ends of the helicalsprings and lcurving inward to a point of connection with the supportingframe.

It further consists in combination with such spring construction, of' aseries of resilient connectors-extending between the flat,

ln the accompanying drawings Figure 1 is an elevation of a seat-backspring with a portion of the upholstering removed to sh'ow the metalconstruction. Fig. 2 is a vertical sectionof the construction shown inFig. l1. Fig. 3 is a front elevation of a slightly modilied form ofspring construction. Figs.` 4 and 5 are vertical sections showing slightmodications of construction. Fig. 6 is a plan and Fig. 7 an edge view ofthe spring ribbon formed by twisting spring wirel into a flat spiral.Fig. 8 is a plan and Fig. 9 a vertical section of a seat-springembodying the invention.

Similar reference characters refer to like parts throughout -the severalviews.

Automobile builders have been experimenting for several years in orderto obtain cushion-springs which will satisfactory to the discriminatingpublic. The objections to the present type ofv cushion are directedchiefly against the hardness of the upper portion of .the back cushionand the front edge of the seat cushion, which hardness results inthejarring and shaking ofv the passenger because. of the unevenness of theroad .over which the `vehicle istraveling.

f This hardness ofthe upper portion ofthe seat back cushions oftencauses' headaches and dizziness. The present construction is especiallyadapted to produce a seat back l "Ef SCHULTZ ADMINISTRTOR OFspecmminofmters mem. y Patenten Mania-1ere. C

sprlng which will render the cushionimmediately-back of the shoulders,neck and:n

head of the passenger so yielding that yall jars and other shocks willbe substantially obviated.

Referring now to 1, 2 and 27, the

arranged in horizontal and upright rows;

Extending from the bottom of the frame up over the outer ends of thehelical springs 3 and connecting to the same, are spring wires 4, whichconnect to the lower ends of the spring ribbons 5, which are formed by itwisting spring wire into latspirals 6, such as shown in Figs. 6 and 7.The vspring ribbons 5 preferably extend upwardl and backward from theupper helical springs, and then turn downward and inward until theyconnect. to the upper bar ,1 of the frame,

preferably forming bows which extend to the rear of the frame, as shownin Fig. 2. Small coil springs 7 may be used toconnect n ish a supportfor` the upholstering Sand prevent the same from sagging downbetween'the spring ribbons.` The softness of this construction is suchthat the thickness of the usual curledhair p'ad may be reduced from fiveor sixinches lto about two inches'.

Otherwise the upholstering of the cushionis about the same as thatalready in use. In the forming of these spring ribbons by bending'thewireto produce VHat spirals, it hasy been found that the ribbon bendslaterally more readily in one direction than the other.

owing to the fact that the wire between adjacent loops is always at oneedge,

a row of helical springs 3, will-be wound in opposite directions.Instead o'f the 4:

extending from the bottom of the ih'ame to the upper helical spring, aribbon of vthis 1 flat, spiral winding may be usedthroughout the heightof the cushion, as shown in'Fig.

3, and it will alsobe seenthat these flat ribbonsl 9 are wound rightandleft-handed.

t of connecting the upright so I between adjacent spring ribbonsso as tofurl may be connected acrossvby means of fiat,

spirally-Wound wire ribbons 10. u The fiat spirally-wound ribbon hereillustrated, is not onlyl veryyieldablewhen'considered as a ribbon, butit expands -or contracts longitudinally `under every, slight force.Therefore, when a spring of such construction is employed in a cushionfor the back of a limousine, as shown in Fig. 5,- a pressure on theupper helical spring suiicient to compress said spring, is accommodatedby the flat spiral spring 11, which contracts readily. In thisconstruction shown in Fig. the back 12 of the limousine body extendsabove the cushion frame so that the flat spiral springs 13 will notextend back of the frame. In Fig. 4f, the upright bars 14 are shownbent'back at their upper ends and carry a cross bar 15 to which the rearends of the flat spiral springs 16 connect. It will' readily be seenthat these seat-back springs can be given any desirable form, to suitthe different constructions of vehicles in which they are to beemployed. q

In the construction shown in Figs. 8 and 9, a frame is shown formed oflongitudinal bars 18 and transverse bars 19, upon which are mounted thehelical springs 20, 21, 22, 23 and 24, which preferably decrease inlength from the front to the back. Extending over these helical springsare Hat, spiral springs 25, in pairs, which connect to the frame at itsfront edge and extend along on both sides of each transverse row ofhelical springs. Mounted on these helical springs 20 to 2 4 is a secondset of helical springs 27 also in longitudinal and transverse rows, but'preferably of somewhat lighter wire than the springs below them. Asecond set of fiat springs 28, in pairs, of this sprallywound wireextends from the springs 25 upward, and then back over the tops of the Ysprings v27, connecting to the same, and

. then down to the frame connecting to the spring construction.

rear ends of the iat springs 25. The usual upholstering 30 may beemployed with this Longitudinal bands 31 and 32 of this spirally-woundwire will extend along the tops of both the upper and the lower sets ofsprings, if desired. This construction is unusually yieldable andresilient', and it is especially adapted for the seats of touring carsand other vehicles which are to be driven at high, speeds over rough froads.

1. A cushion spring A construction comprising a frame, helical 'springsmountedV thereon in transverse rows, a series of transverse rows ofsprings formedfof flat coils of spirally-wound wire connected to theframe andv having their loops slightly inclined from the general surfaceAof .the said arias' Srrins v 2. cushlon .sprlng construction comprisinga trama-helical springs mounted thereon in longitudinal and transverserows,

a series of transverse springs comprising fiat spirals connected to theframe atv both ends and extending upward over the vouter endsV of thehelical springs, a second set of helical springs mounted upon the rstand a second set of Hat spiral springs connected to the first -set of'atiral springs and extending over the tops o the second set of helicalsprings, and longitudinal lines of fiat spiral springs extendin thehelical springs' of nected to the transverse spiral springs.

3. A cushion spring comprising a frame, helical springs mounted thereonin transverse rows, a series of springs connected to the frame at bothends and connected to the helical springs at an intermediate point inthe length of the said helical springs, a, second set of springsconnected to the second mentioned springs and extending over the outerends oof the helical springs.

4. A cushion spring comprising a frame, helical springs mounted thereonin transverse rows, a series of springs connected to the frame at bothends and connected to the helical springs at an` intermediate polnt 1nthe length of the said helical springs, a second set of springsconnected to the second Vmentioned springs and estendngover the outerends of helical springs, and long1tudinal springs joining the adjacenthelical -5.- A cushion sprmg comprlsing a frame, helical springs mountedthereon in transverse rows, a series of springs connected to the frameat both ends` and connected to the across the tops of oth sets and.conhelical springs at an intermediate point in the length of the saidhelical springs, a second set of springs connected to the secondmentioned springs and extending over the outer ends of helical springs,and a set of longitudinal. sp Joining intermediate portions ofthe'adiacent helical sprin 6. A cushion spring comprising a me,

helical springs mounted thereon in transverse rows, a series of springsconnected to the frame at both ends and connected to the helical springsat an intermediate point in the length of the said helical springs, asecond set of `springs connected to the second mentioned springs andextending over the outer ends o helical springs, a set of longitudinalsprings joimng the intermediate y and longitudinal springs joining theadja-v portionsof the adjacent helical springs, and a second set oflongitudinal springs joining the outer ends of the adjacent helicalsprings. v

7 A cushion spring comprising a frame, helical spr-ings mounted thereonin transverse roivvsfa-` series of springs connected to the frame vatboth ends and also connected to the helicalA springs at anV intermediatepoint in the length of the said helical springs, and a series of flatspiral springs connecting the outer ends of the helical springs.

8. A cushion spring comprising. a frame, helical springs mounted thereonin trans- Verse'rows, a series of springs connected to the frame at bothends and also connected to the helical springs at' an intermediatepoint' in the length of the said helical sprinlgg'a series of flatspiral springs connecting the outer ends of the helical springs,

cent helical springs.

9. A cushion spring comprising a frame, helical springs mounted thereonin transverse rows, a series of springs connected to the frame at bothends and also connected to vthe helical springs at an intermediate pointin the length of the said helical springs, a series of flat spiralsprings'connecting the outer ends of the helical springs, and flatlongitudinal spiral springs joining the outer ends of adjacent helicalsprings.

10. A'cushion spring comprising a frame, helical springs mounted thereonin transverse rows, a series of springs connected to the frame at bothends and extending over the outer ends of the helical springs, a secondset of helical springs mounted upon the rst, and a second set of springsconnected to the springs that extend over the iirst mentioned set ofspiral springs and themselves extending over the outer ends of thesecond set of helical springs.

l1. A cushion spring construction comprising av frame, helical springsmounted thereon in a transverse row, a pair of springs extending overthe outer ends of the helical springs of each row, each of the pair ofsprings comprising a portion formed of a fiat coil of spirally-woundwire andextending in an arched form from the outer end of the helicalspring at one end of the row to the frame, the at spirally-wound portionof one of the springs being wound righthanded and the lat spirally woundportion of the other being wound left-handed whereby a balancedstructure is produced.

12. A cushion spring comprising a frame, helical springs mounted thereonin transverse rows, a series of fiexible members connected to the lframeat both ends and connected to the helical springs at an intermediatepoint in the length of the said helical springs, and a set of springsoperatively connected to the frame at both ends and extendingover theouter ends of the helical springs.

In testimony whereof I have signed this l specification in the presenceof two subscribing wltnesses.

EDWARD N. PAGELSEN, JOHN D. HARGER.

